To specify which CAD levels and surfaces are displayed in the CAD view:
- Select Home tab > Mouse Context panel > Surface Selector.
- Right-click the CAD view, and select Levels from the context menu. The CAD Object Visibility dialog is displayed, for example:

- Click
to expand the folders and display the levels and objects you want to work with.
- By default, all the levels and objects of a model are displayed. Click
next to the entry you do not want to display in the CAD view; the icon changes to
and the icon of any parent level or object changes to
to indicate one or more sub-entries are hidden.In this example, the whole CAD model is displayed because all the level and object entries are selected:

with these selections, Face 1~5 and Face 1~78 in Level_1 are hidden:

To redisplay an entry in the CAD view, click the
icon again.
- Click OK to save your changes and close the dialog.
Tip: You can also show and hide CAD levels using the
CAD tab.